netdev - Re: [PATCH] rhashtable: detect when object movement between tables might have invalidated a lookup

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Message-Id: <20181118.202241.429922823390869323.davem@davemloft.net>
Date:   Sun, 18 Nov 2018 20:22:41 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     herbert@...dor.apana.org.au
Cc:     neilb@...e.com, tgraf@...g.ch, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH] rhashtable: detect when object movement between tables
 might have invalidated a lookup

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Mon, 19 Nov 2018 12:06:34 +0800

> On Mon, Nov 19, 2018 at 11:56:35AM +0800, Herbert Xu wrote:
>>
>> I take that back.  Because of your shift which cancels out the
>> shift in NULLS_MARKER, it would appear that this should work just
>> fine with RHT_NULLS_MARRKER(0), no? IOW, it would appear that
>> 
>> 	RHT_NULLS_MARKER(0) = RHT_NULLS_MARKER(RHT_NULLS_MARKER(0))
> 
> My emails to Neil are bouncing:
> 
> 	neilb@...e.com
> 	  host smtp.glb1.softwaregrp.com [15.124.2.87]
> 	  SMTP error from remote mail server after RCPT TO:<neilb@...e.com>:
> 	  550 Cannot process address

Yeah this just started happening 2 days ago.